Thanks for the update, my main relay was vulnerable but i've patched it now to 0.2.8.9. My Raspberry Pi is running 0.2.5.12 -- is that ok?

just a reminder since most of the tor network (including some of the biggest operators) still runs vulnerable relays

https://blog.torproject.org/blog/tor-0289-released-important-fixes

Since 2/3 directory authorities removed most vulnerable versions from their 'recommended versions' you should see a log entry if you run outdated versions (except if you run 0.2.5.12).

It is not possible to reliable determine the exact CW fraction affected[1] due to the fact that patches were released that didn't increase tor's version number. Therefore it is also possible that you get log entries even if you run a patched version (IMHO this hasn't been handled in the most professional way).

Update instructions

Debian/Ubuntu ==============

make sure you use the Torproject repository: https://www.torproject.org/docs/debian.html.en

(you can also use the debian repository but the Torproject's repo will provide you with the latest releases)

aptitude update && aptitude install tor

CentOS/RHEL/Fedora ===================

yum install --enablerepo=epel-testing tor

FreeBSD ============

pkg update pkg upgrade

OpenBSD ===========

pkg_add -u tor

Windows ========

No updated binaries available for this platform yet.

[1] as of 2016-10-25 18:00 (onionoo data) conservative estimate ---------------------- (counts only 0.2.8.9 and 0.2.9.4-alpha as patched) 31% CW fraction patched

optimistic estimate ------------------- (additionally assumes every non-Windows running 0.2.4.27, 0.2.5.12, 0.2.6.10, 0.2.7.6 that restarted since 2016-10-17 is patched): 43% CW fraction patched

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